Lithium pack building? Answered
I want to make a 4s4p pack out of 18650 cells. I am asking a lot of questions and doing a lot of research online before buying the parts so I know it will all work when I order the parts.
My first question is, should I make the pack out of 18650 cells with individual protection or all connected to one PCM? With protected cells all I need to do is connect the charger and the cells will charge and cut off at the right time? This is the charger I want to get. Maybe if I used protected cells I should charge them by taking them out of the pack and charging them in 4x wall chargers like this one.
Say I didn't use cells with individual protection. I have my eye on this PCM . It has a balance control function. I can see the benefit of balancing cells in a 4s1p configuration but does balancing work properly in a 4s4p configuration when 4 cells are acting as one?
Lastly I want to make the pack user serviceable so I will use battery holders. I saw some here but it would cost over 50 dollars for all the holders. That seems too expensive. Do you know of cheaper ones?
Thank you for your input